/*
silverPDF is sponsored by Aleyant Systems (http://www.aleyant.com)

silverPDF is based on PdfSharp (http://www.pdfsharp.net) and iTextSharp (http://itextsharp.sourceforge.net)

Developers: Ai_boy (aka Oleksii Okhrymenko)

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above information and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR SPONSORS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

*/
#region PDFsharp - A .NET library for processing PDF
//
// Authors:
//   Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2005-2008 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://sourceforge.net/projects/pdfsharp
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Diagnostics;
using System.IO;

namespace PdfSharp.Pdf.Printing
{
  // Some googled inforamtion about command line switches:
  // 
  // AcroRd32.exe filename                                   Executes the reader and displays a file.
  // AcroRd32.exe /p filename                                Executes the reader and prints a file.
  // AcroRd32.exe /t path printername drivername portname    Executes the reader and prints a file
  //                                                         while suppressing the Acrobat print
  //                                                         dialog box, then terminating the Reader.
  //
  // The four parameters of the /t option evaluate to strings.
  // printername     The name of the Printer.
  // drivername      Your printer drivers name i.e. whatever apperars in the Driver Used box when viewing printer properties.
  // portname        The printers port. portname cannot contain any "/" characters; if it does, output is routed to
  //                 the default port for that printer.
  //
  //                                
  // Acrobat.exe /n    Launch a separate instance of the Acrobat application
  // Acrobat.exe /s    Open Acrobat suppressing the splash screen
  // Acrobat.exe /o    Open Acrobat suppressing the openfile dialog
  // Acrobat.exe /h    Open Acrobat in hidden mode


  /// <summary>
  /// A wrapper around Adobe Reader or Adobe Acrobat that helps to print PDF files.
  /// The property AdobeReaderPath must be set before the class can be used for printing.
  /// The class was testet with Adobe Reader 7.0.7.
  /// If this stuff does not work, _please_ don't write me mails!
  /// If you enhance this class, please let me know.
  /// </summary>
  public class PdfFilePrinter
  {
    /// <summary>
    /// Initializes a new instance of the <see cref="PdfFilePrinter"/> class.
    /// </summary>
    public PdfFilePrinter()
    {
    }

    /// <summary>
    /// Initializes a new instance of the <see cref="PdfFilePrinter"/> class.
    /// </summary>
    /// <param name="pdfFileName">Name of the PDF file.</param>
    public PdfFilePrinter(string pdfFileName)
    {
      this.PdfFileName = pdfFileName;
    }

    /// <summary>
    /// Initializes a new instance of the <see cref="PdfFilePrinter"/> class.
    /// </summary>
    /// <param name="pdfFileName">Name of the PDF file.</param>
    /// <param name="printerName">Name of the printer.</param>
    public PdfFilePrinter(string pdfFileName, string printerName)
    {
      this.pdfFileName = pdfFileName;
      this.printerName = printerName;
    }

    /// <summary>
    /// Gets or sets the name of the PDF file to print.
    /// </summary>
    public string PdfFileName
    {
      get { return this.pdfFileName; }
      set { this.pdfFileName = value; }
    }
    string pdfFileName;

    /// <summary>
    /// Gets or sets the name of the printer. A typical name looks like '\\myserver\HP LaserJet PCL5'.
    /// </summary>
    /// <value>The name of the printer.</value>
    public string PrinterName
    {
      get { return this.printerName; }
      set { this.printerName = value; }
    }
    string printerName;

    /// <summary>
    /// Gets or sets the working directory.
    /// </summary>
    public string WorkingDirectory
    {
      get { return this.workingDirectory; }
      set { this.workingDirectory = value; }
    }
    string workingDirectory;

    /// <summary>
    /// Prints the PDF file.
    /// </summary>
    public void Print()
    {
      Print(-1);
    }

    /// <summary>
    /// Prints the PDF file.
    /// </summary>
    /// <param name="milliseconds">The number of milliseconds to wait for completing the print job.</param>
    public void Print(int milliseconds)
    {
      if (this.printerName == null || this.printerName.Length == 0)
        this.printerName = PdfFilePrinter.defaultPrinterName;

      if (PdfFilePrinter.adobeReaderPath == null || PdfFilePrinter.adobeReaderPath.Length == 0)
        throw new InvalidOperationException("No full qualified path to AcroRd32.exe or Acrobat.exe is set.");

      if (this.printerName == null || this.printerName.Length == 0)
        throw new InvalidOperationException("No printer name set.");

      // Check whether file exists.
      string fqName = String.Empty;
      if (this.workingDirectory != null && this.workingDirectory.Length != 0)
        fqName = Path.Combine(this.workingDirectory, this.pdfFileName);
      else
        fqName = Path.Combine(Directory.GetCurrentDirectory(), this.pdfFileName);
      if (!File.Exists(fqName))
        throw new InvalidOperationException(String.Format("The file {0} does not exists.", fqName));

      // TODO: Check whether printer exists.

      try
      {
        DoSomeVeryDirtyHacksToMakeItWork();

        //acrord32.exe /t          <- seems to work best
        //acrord32.exe /h /p       <- some swear by this version
        ProcessStartInfo startInfo = new ProcessStartInfo();
        startInfo.FileName = PdfFilePrinter.adobeReaderPath;
        string args = String.Format("/t \"{0}\" \"{1}\"", this.pdfFileName, this.printerName);
        //Debug.WriteLine(args);
        startInfo.Arguments = args;
        startInfo.CreateNoWindow = true;
        startInfo.ErrorDialog = false;
        startInfo.UseShellExecute = false;
        if (this.workingDirectory != null && this.workingDirectory.Length != 0)
          startInfo.WorkingDirectory = this.workingDirectory;

        Process process = Process.Start(startInfo);
        if (!process.WaitForExit(milliseconds))
        {
          // Kill Adobe Reader/Acrobat
          process.Kill();
        }
      }
      catch (Exception ex)
      {
        throw ex;
      }
    }

    /// <summary>
    /// For reasons only Adobe knows the Reader seams to open and shows the document instead of printing it
    /// when it was not already running.
    /// If you use PDFsharp and have any suggestions to circumvent this function, please let us know.
    /// </summary>
    void DoSomeVeryDirtyHacksToMakeItWork()
    {
      if (PdfFilePrinter.runningAcro != null)
      {
        if (!PdfFilePrinter.runningAcro.HasExited)
          return;
        PdfFilePrinter.runningAcro.Dispose();
        PdfFilePrinter.runningAcro = null;
      }
      // Is any Adobe Reader/Acrobat running?
      Process[] processes = Process.GetProcesses();
      int count = processes.Length;
      for (int idx = 0; idx < count; idx++)
      {
        try
        {
          Process process = processes[idx];
          ProcessModule module = process.MainModule;

          if (String.Compare(Path.GetFileName(module.FileName), Path.GetFileName(PdfFilePrinter.adobeReaderPath), true) == 0)
          {
            // Yes: Fine, we can print.
            PdfFilePrinter.runningAcro = process;
            break;
          }
        }
        catch { }
      }
      if (PdfFilePrinter.runningAcro == null)
      {
        // No: Start an Adobe Reader/Acrobat.
        // If you are within ASP.NET, good luck...
        PdfFilePrinter.runningAcro = Process.Start(PdfFilePrinter.adobeReaderPath);
        PdfFilePrinter.runningAcro.WaitForInputIdle();
      }
    }
    static Process runningAcro;

    /// <summary>
    /// Gets or sets the Adobe Reader or Adobe Acrobat path.
    /// A typical name looks like 'C:\Program Files\Adobe\Adobe Reader 7.0\AcroRd32.exe'.
    /// </summary>
    static public string AdobeReaderPath
    {
      get { return PdfFilePrinter.adobeReaderPath; }
      set { PdfFilePrinter.adobeReaderPath = value; }
    }
    static string adobeReaderPath;

    /// <summary>
    /// Gets or sets the name of the default printer. A typical name looks like '\\myserver\HP LaserJet PCL5'.
    /// </summary>
    static public string DefaultPrinterName
    {
      get { return PdfFilePrinter.defaultPrinterName; }
      set { PdfFilePrinter.defaultPrinterName = value; }
    }
    static string defaultPrinterName;
  }
}